﻿
public class AddressBook
{
    public string FirstName
    {
        get;
        set;
    }
    public string LastName
    {
        get;
        set;
    }
    public string Address
    {
        get;
        set;
    }
    public string Phone
    {
        get;
        set;
    }

    public AddressBook(string firstname, string lastname, string address, string phone)
    {
        this.FirstName = firstname;
        this.LastName = lastname;
        this.Address = address;
        this.Phone = phone;
    }
}